A new single disk pneumatic brake for low-torque applications is suitable for mounting on shafts with installation space constraints. Featuring a diameter of 6 in., it is capable of working in high- and low-speed unwind applications in a torque range from 1 to 500 lbs-in. The brake applies torque to the unwind shaft by pneumatically actuating a series of cylinders (from one up to six) that face the inner disk surface. Sufficient heat dissipation for continuous industrial use is provided by the raised fin design of the disk's outer surface. A limited travel actuator piston prevents disk scoring, and the return spring design eliminates the possibility of puncturing the actuator diaphragm. A corresponding single disk pneumatic clutch is also available.
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